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Updated: Aug 14, 2026

Double Direct Injection of Blood into the Cisterna Magna as a Model of Subarachnoid Hemorrhage
Published on: August 30, 2020
Early posttraumatic subarachnoid hemorrhage due to dissecting aneurysms in three children
M C J Kneyber1, G J E Rinkel, L M P Ramos
1Department of Pediatrics, Wilhelmina Children's Hospital, University Medical Center Utrecht, The Netherlands.
Insights
Subarachnoid hemorrhage in children is rare but can result from head injuries. Intracranial dissecting aneurysms are a key cause to consider following head trauma, as they pose a risk of rebleeding.
Area of Science:
- Pediatric Neurology
- Neurosurgery
- Vascular Neurology
Background:
- Subarachnoid hemorrhage (SAH) is uncommon in children, with ruptured saccular aneurysms being a rare cause.
- Pediatric traumatic aneurysms, often presenting weeks after head injury, are more frequently reported.
- Intracranial dissecting aneurysms are an important, though less common, cause of SAH in pediatric head trauma.
Observation:
- The study details three pediatric cases of acute SAH following head injury.
- In these cases, the SAH was attributed to intracranial dissecting aneurysms.
- The clinical presentation involved SAH in the basal cisterns after head trauma.
Findings:
- Intracranial dissecting aneurysms are a significant cause of acute subarachnoid hemorrhage in children after head injury.
- These aneurysms can present acutely following trauma, unlike some other traumatic aneurysms that manifest later.
- The presence of SAH in basal cisterns following head trauma in children warrants consideration of dissecting aneurysms.
Implications:
- Early consideration and treatment of intracranial dissecting aneurysms are crucial in pediatric patients with head trauma and SAH.
- Prompt diagnosis and intervention can mitigate the risk of potentially life-threatening rebleeding.
- This highlights the need for heightened awareness among clinicians regarding this specific aneurysm type in pediatric head injury cases.
Abstract:
Subarachnoid hemorrhage (SAH) due to a ruptured saccular aneurysm is uncommon in children. Pediatric traumatic aneurysms have been reported relatively frequently, tending to bleed after an interval of weeks after head injury. The authors describe three children with acute SAH after head injury caused by intracranial dissecting aneurysms. When head trauma in children is complicated by SAH in basal cisterns, dissecting aneurysms should be considered and treated, because rebleeding may occur.
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